f2fs: do not assign a new segment for dio under space shortage

If there is not enough free segment, we should not assign a new segment
explicitly. Otherwise, we can run out of free segment.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-08-11 10:17:27 -07:00
commit 47e70ca46f